Paper-drying machine



May 15, 1928. 1,670,113

A. D. HARRISON PAPER DRYING MACHINE Filed April 14, 1927 I If] 1/ Patented May 15, 1928.

mnm m mama, or momma, ouaaao, cnuna rma-navme'ncnma.

Application fled 513211 14, 1987. Serial No. 183,768-

The invention relates to a paper drying machine, as described in the present specification and illustrated in the accompanying drawings that form part of the same. v

The invention consists essentially of the novel features of construction pointed out broadly and specifically in the claims for novelty followin a description containing an explanation in detail of an acceptable form of the invention.

The objects of the invention are to re-.

move the water of condensation from steam heated rotar drying c linders in a manner that will re uce the fi of water clinging to the inner wall surface during rotation to the minimum and thereby insure an even heating surface throughout and at the same time distribute the steam to secure the best drying effects; to increase the output of paper by speeding up the dryer and avoid breakages of the paper sheet usually attributable to uneven 'dryin to maintain a free and uite opening at t e siphon mouth and thus ring the resistance in the outflow of water to a negligible uantity; to eliminate the expense due 'to sip on repairs resulting -from damages to the siphon and owing to the ineficient support of the latterin ordinary practice consequently saving both time and money; to furnish in paper machinery a substantial and practical device for the aforesaid purposes at a moderate cost and adapted to overcome the well recognized faults and short comings inherent in the existing methods of removing water from driers; and to provide for the paper industry and for other industries where like driers or machines are used an eflicient, durable and serviceable device for water removel.

In the drawings, Figure 1 is a longitudinal sectional view of the cylinder forming the drier and illustrating the invention therewithin. Figure 2 is a cross sectional view on the line 22 in Figure 1.

Figure 3 is a sectional detail showing a slight modification of the water collector.

Like numerals of reference indicate cor-' responding parts in, the various figures.

Referring to the drawin s, the numeral 15 indicates the drying cy inder or drum supported by the journal members 16 and 7 extending into the heads 18 and 19 respectively.

The hollow shaft 20 is. rigidly secured in the bracket 21 at one end and in the wall of the steam inlet chamber 22 at the other end and is perforated throughout its length within the cylinder 15 forming the steam jet orifices 23 through which the steam spurts in maintainingla comparatively hi h temperature within t e cylinder to heat is e wall thereof around which the paper turns in drying o erations.

The brac ets 24 are rigidly secured to the shaft 20 and form han ers having at the lower ends the curved osets25 and 26 adapted to engage and support the scroll 27. The scroll 27 is an elongated afiair and preferably extends for the greater part of the length of the cylinder 15 and is formed with the scoop 28 or water catcher, which from the proximity, of the cylinder wall extends upwardly into the inturned portion forming the trough 29, thereby providing the water receptac e or collector for the discharge from the scoop, that gathers the water from the rotating cylinder and deflects it into the trough 29, where it is subjected to removel by means of the siphon 30 extending into and through said hollow shaft from the discharge water chamber 31 adjacentto the said steam inlet chamber. The. siphon 30 within the hollow shaft 2O extends into the cylinder 15 and is there downwardly turned by means of the section 32 into the trough 29 from which the water is siphoned.

It will be seen that the water in the trough is uiet therefore there is no disturbance at t e mouth of the inlet section 32 of siphon consequently there is no resistance to interfere with a constant and quiet discharge.

In Figure 3 the scroll 33 is slightly modified and the scoop section 34 extended to bring the inturned trough section 35 above the shaft 20, where the whole scroll is supported by the u turned bracket 36 rigidly secured to the s aft 20, otherwise the invention is precisely the same in r rd to elongated scroll forming a water catcher its operation and its collection of t e conand trough and fixedly secured to said densation water. shaft an a siphon extending through What I claim is 4 said shaft and into said trough and' ada ted 5 In paper dryin machines, a rigid hollow to remove the water of con ensation mm 15 shaft having per orations adapted to emit said cylinder. steam, a c lifider rotatingabout said shaft, Signed at Montreal, Canada, this 11th brackets orming hangers and rigidly se'- day of April, 1927. cured to said shaft, at intervals within 10 said cylinder and suitably braced, an ALBERT D. HARRISON. 

